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Posts by old_user849

Posts by old_user849

1) Message boards : climateprediction.net Science : ESA projects on key oceanic variables (Message 25559)
Posted 11 Dec 2006 by Profile old_user849
Post:
By absorbing half of the carbon dioxide emitted into the atmosphere, the oceans have a profound influence on climate. However, their ability to take up this carbon dioxide might be impaired as a result of climate change. To determine their response to global warming, ESA has backed two projects that provide systematic data on key oceanic variables – colour and temperature.

Full story

2) Message boards : climateprediction.net Science : NASA RESEARCH REVEALS CLIMATE WARMING REDUCES OCEAN FOOD SUPPLY (Message 25498)
Posted 6 Dec 2006 by Profile old_user849
Post:
WASHINGTON - In a NASA study, scientists have concluded that when
Earth\'s climate warms, there is a reduction in the ocean\'s primary
food supply. This poses a potential threat to fisheries and
ecosystems.

By comparing nearly a decade of global ocean satellite data with
several records of Earth\'s changing climate, scientists found that
whenever climate temperatures warmed, marine plant life in the form
of microscopic phytoplankton declined. Whenever climate temperatures
cooled, marine plant life became more vigorous or productive. The
findings will appear in the journal Nature on Dec. 7.

The results provide a preview of what could happen to ocean biology in
the future if Earth\'s climate warms as the result of increasing
levels of greenhouse gases in the atmosphere.

\"The evidence is pretty clear that the Earth\'s climate is changing
dramatically, and in this NASA research we see a specific consequence
of that change,\" said oceanographer and study co-author Gene Carl
Feldman of NASA\'s Goddard Space Flight Center, Greenbelt. Md. \"It is
only by understanding how climate and life on Earth are linked that
we can realistically hope to predict how the Earth will be able to
support life in the future.\"

Phytoplankton are microscopic plants living in the upper sunlit layer
of the ocean. They are responsible for approximately the same amount
of photosynthesis each year as all land plants combined. Changes in
phytoplankton growth and photosynthesis influence fishery yields,
marine bird populations and the amount of carbon dioxide the oceans
remove from the atmosphere.

\"Rising levels of carbon dioxide in the atmosphere play a big part in
global warming,\" said lead author Michael Behrenfeld of Oregon State
University, Corvallis. \"This study shows that as the climate warms,
phytoplankton growth rates go down and along with them the amount of
carbon dioxide these ocean plants consume. That allows carbon dioxide
to accumulate more rapidly in the atmosphere, which would produce
more warming.\"

The findings are from a NASA-funded analysis of data from the
Sea-viewing Wide Field-of-view Sensor (SeaWiFS) instrument on the
OrbView-2 spacecraft, launched in 1997. SeaWiFS is jointly operated
by GeoEYE, Dulles, Va. and NASA.

The uninterrupted nine-year record shows in great detail the ups and
downs of marine biological activity or productivity from month to
month and year to year. Captured at the start of this data record was
a major, rapid rebound in ocean biological activity after a major El
Nino event. El Nino and La Nina are major warming or cooling events,
respectively, that occur approximately every 3-7 years in the eastern
Pacific Ocean and are known to change weather patterns around the
world.

Scientists made their discovery by comparing the SeaWiFS record of the
rise and fall of global ocean plant life to different measures of
recent global climate change. The climate records included several
factors that directly effect ocean conditions, such as changes in sea
surface temperature and surface winds. The results support computer
model predictions of what could happen to the world\'s oceans as the
result of prolonged future climate warming.

\"When we compared changes in phytoplankton activity with simultaneous
changes in climate conditions, the agreement between the two records
was simply astonishing,\" Behrenfeld said.

Ocean plant growth increased from 1997 to 1999 as the climate cooled
during one of the strongest El Ni?o to La Ni?a transitions on record.
Since 1999, the climate has been in a period of warming that has seen
the health of ocean plants diminish.

The new study also explains why a change in climate produces this
effect on ocean plant life. When the climate warms, the temperature
of the upper ocean also increases, making it \"lighter\" than the
denser cold water beneath it. This results in a layering or
\"stratification\" of ocean waters that creates an effective barrier
between the surface layer and the nutrients below, cutting off
phytoplankton\'s food supply. The scientists confirmed this effect by
comparing records of ocean surface water density with the SeaWiFS
biological data.
3) Questions and Answers : Macintosh : The Mac Donation - New Mac Support (?) Thread (Message 24182)
Posted 4 Sep 2006 by Profile old_user849
Post:
\"Where there is a will, there is a way.\" as the cliche has it.

Would the Met Office really hold back permission to a responsible organisation ? I don\'t see it. It is however, another convenient hurdle for an uncommitted CPDN.

K.
4) Questions and Answers : Macintosh : The Mac Donation - New Mac Support (?) Thread (Message 24180)
Posted 4 Sep 2006 by Profile old_user849
Post:

I\'ll be happy to look into lobbying Apple, who kows my \"admintingly old) contacts mights still prove thre worth ...


I think that if anyone has any contacts at Apple they should approach them with a view to intoducing them to the CPDN Managers. Apple have shown a willingness to aid in the development of applications for OSX in that they supported the development of the Folding at Home mac OSX version of their worker.

K.
5) Questions and Answers : Macintosh : The Mac Donation - New Mac Support (?) Thread (Message 24044)
Posted 19 Aug 2006 by Profile old_user849
Post:
Hi,

The problem for CPDN on Mac is not that they don\'t have the kit, although it was for a while, in that they only had a Mac Laptop. I sold them a G4 late last year, at a knockdown price I might add.

The problem lies with compiling the programme. It uses old Fortran, some of it 30 years old, from the Met office data base. The compiler that they needed to use was to expensive to buy, with no guarantee that it would work any better than the one they had.

In addition, they only have two people, looking after the project, Carl and Tolu. They were also developing the side projects for the BBC as well as looking after the normal stuff and I think trying to sort out the problems on the Mac version was probably taking up to much of their time.

So I think what they need is:-

1/ a top of the range MacPro 3. It will have to handle very large ammounts of data and not take forever to compile and re-compile as required. Say £5,000

2/ The latest compilers for IntelMacs plus other software needed. say £2,500

3/Funds to employ a Mac specalist for one year. Say £30.000

4/ Plus additional admin costs. Say £2.500

That\'s £40,000 total. I think that should do it. Of course funding to employ someone for an addtional year may be required later. But we don\'t have to worry about that yet.

Maybe the National Lottery Fund would help?

I did try to contact Apple about supporting the project, but nothing of course.

K.





6) Message boards : Number crunching : Lighthouse for novice Mac volunteers (interim) (Message 19922)
Posted 3 Feb 2006 by Profile old_user849
Post:
1. please download and install the prerequisite application library first.

http://climateapps2.oucs.ox.ac.uk/cpdnboinc/download/libcpdn.zip

2. Make sure you are running the latest version of BOINC.

http://climateapps2.oucs.ox.ac.uk/cpdnboinc/download.php

Firewall and port settings:-
Rom walton says Boinc needs the following:?BOINC Manager needs to be able to open outbound connections to either 1043 or 31416.?BOINC Screensaver needs to be able to open outbound connections to either 1043 or 31416.?BOINC needs to open an inbound connection to either 1043 or 31416, and an outbound connection to port 80 for downloads and uploads of workunits, results, and science packages.?Plus, BOINC may also need port 43. CPDN Trickle\'s may need https on port 443.

There is a lot of help and support. Here is a good place to start:- http://boinc.berkeley.edu/participate.php and which gives mac instructions as required.

Be aware that developement of BOINC and BOINC projects and their servers, is ongoing; so problems may occur. If they do happen to you, take the time to look around the project boards, read the Wiki pages and BOINC Help menu.

On my Mac G5 Quad running four (4) CPDN work units I am currently using 5.22 GB of Disk, so they can use a lot of disk space.

If you are running multiple CPDN wu\'s make sure that you have a long time gap between wu\'s. I am using around 36 hours. I say this as I have had problems uploading more than one wu at the same time. WU\'s take a long time to run, 1400 to 1500 CPU hours is not uncommon.

Make sure that your \'permissions\' are in good repair. Run the disk utility from the drop down menu on the OS install disk. (Take care).

In the Work tab, if you highlight a wu that has been running a little while and then hit the \'show graphic\' button, the graphics should display ok for that wu only.

K.
7) Message boards : Number crunching : Database Sluggish -- Moved Trickle Info \'Down\' (Message 18792)
Posted 28 Dec 2005 by Profile old_user849
Post:
Hi,

Perhaps a script of some kind can be added so as to update credit displays (from Trickles) every, say, 8 hours, so as to better handle the server load.

As it is , my trickles RAC is riseing but on the stats display pages it is falling.


K.
8) Questions and Answers : Macintosh : Unrecoverable error for result (Message 18790)
Posted 28 Dec 2005 by Profile old_user849
Post:
@ Macjack

\"Does any one have an idea on how I could fix this ?\"

The only fix for this at the moment, so far as I can see, is to forget that wu and move on to the next one.

The wastage rate of wu\'s on macs is still high i think. Carl has said \"actually for us \"Over\" probably means that we only need one of these results;\" So it may be that you have got a stopped duplicate wu.

You can check that your permissions are correct (Don\'t forget that you have to do this from your install cd useing the disk utility in the drop down menu, for it to be 100% effective.)

If you are useing a router or firewall make sure you have the correct ports set up. Rom walton says Boinc needs the following:
BOINC Manager needs to be able to open outbound connections to either 1043 or 31416.
BOINC Screensaver needs to be able to open outbound connections to either 1043 or 31416.
BOINC needs to open an inbound connection to either 1043 or 31416, and an outbound connection to port 80 for downloads and uploads of workunits, results, and science packages.
BOINC may also need port 43. CPDN Trickle\'s may need https on port 443.

Be aware that you may get upload problems after phase one, the server staus will show that the wu is over, but it will continue to crunch on your machine.

Now that CPDN have a dual G5 with Tiger we can hope to see a resolution of mac problems in the new year, so stay with it.

K.

@ Les Bayliss

Les,

Mac OS x is in two flavours Panther which is 10.3.xx and Tiger which is 10.4.xx. They show up on BOINC projects as Darwin X.X.X and as \'Powermac or book . xx as the machine and cpu\'s

btw I like your posts on the mac q & a - good effort. By your interest I think you will be getting a mac in 2006. Happy new year.

K.



9) Questions and Answers : Macintosh : Every WU crashing with the same error... (Message 18269)
Posted 16 Dec 2005 by Profile old_user849
Post:
MacOS Error -43 occured in Mac_Lib.c line 64

I have this error msg also but it is in all the stderr.txt files in /library/application suport/BOINC data/slots/ However CPDN continues to run ok on my machine.

Tolu is investigating it. Presumable you tried to re-install the libcpdn pckg.

K.
10) Questions and Answers : Macintosh : Can\'t seem to connect to climateprediction.net (Message 18267)
Posted 16 Dec 2005 by Profile old_user849
Post:
Check your router and/or your firewall port settings.

\"Rom walton says Boinc needs the following:
BOINC Manager needs to be able to open outbound connections to either 1043 or 31416.
BOINC Screensaver needs to be able to open outbound connections to either 1043 or 31416.
BOINC needs to open an inbound connection to either 1043 or 31416, and an outbound connection to port 80 for downloads and uploads of workunits, results, and science packages.\"

K.
11) Questions and Answers : Macintosh : Blue planet (Message 18170)
Posted 14 Dec 2005 by Profile old_user849
Post:
I would just let it run if I were you and it may resolve itself in time. It may not have enough information yet to build a display.

Have you read this section:-

http://www.climateprediction.net/AdvancedVisualisation/advancedvisualisation_intro.php


There is information on Mac there, and it will explain how the display works.

K.
12) Questions and Answers : Macintosh : Version 4.22 release (Message 17821)
Posted 6 Dec 2005 by Profile old_user849
Post:
I am not sure if I am able to let this machine and the program run for the coming months without at least sometimes stopping BOINC or even the machine, e.g. due to hardware modification.


Hi,
I would think that this depends on how far along you are in the cycle. If you have just started (and therefore have the new version 4.22) or have a few days work only, then I suggest that you exit BOINC and restart your machine then restart BOINC under CPDN and see what happens. Tolu is saying that the crash bug is fixed. If BOINC crashes, and you do not have the latest version of BOINC and sulphur cycle, then its an opertunity to update! No doubt any work units you loose will be recycled eventualy.

Now that CPDN has a Dual G5 we can hope to see some improvements to the Mac versions of CPDN.

K.

13) Questions and Answers : Macintosh : sulphur model d/load problem (Message 16205)
Posted 24 Sep 2005 by Profile old_user849
Post:
OK ---- After a third try I have it downloaded and it seems to be running ok.

What I did was to adjust my preference settings. I set to hold in memory, increased available memory, reset connection to server to 2 days from .1 days. I also reinstalled the libcpdn package.

The log shows that it all downloaded and started ok, (it was crashing.)

It\'s a long wu - 2956 hours - and uses a large amount of disk space - 333.25mb as against sah 3.83mb.

Lets see how it goes.

K.
14) Questions and Answers : Macintosh : sulphur model d/load problem (Message 16153)
Posted 21 Sep 2005 by Profile old_user849
Post:
The download for the sulpher model failed with me. I attach the stderrdae text file.

I am running Tiger (osx 10.4.2) on a G5 dual 2.0 ghz with 2.5 gig ddr sdram with adsl BT connection and BOINC Manager 4.43


2005-09-20 21:03:53 [SETI@home] Deferring communication with project for 10 minutes and 5 seconds
2005-09-20 21:07:49 [climateprediction.net] PERS_FILE_XFER_SET::remove(): not found
2005-09-20 21:07:49 [climateprediction.net] PERS_FILE_XFER_SET::remove(): not found
2005-09-20 21:07:49 [climateprediction.net] PERS_FILE_XFER_SET::remove(): not found
2005-09-20 21:07:49 [climateprediction.net] PERS_FILE_XFER_SET::remove(): not found
2005-09-20 21:07:49 [climateprediction.net] PERS_FILE_XFER_SET::remove(): not found
2005-09-20 21:09:25 [climateprediction.net] Giving up on download of 470c_a00295980.zip: file was not found on server
2005-09-20 21:09:25 [climateprediction.net] Checksum or signature error for 470c_a00295980.zip
2005-09-20 21:09:25 [climateprediction.net] Unrecoverable error for result 470c_a00295980_1 (WU download error: couldn\'t get input files:
<file_xfer_error>
<file_name>470c_a00295980.zip</file_name>
<error_code>-163</error_code>
<error_message>file was not found on server</error_message>
</file_xfer_error>
)
2005-09-20 21:09:26 [climateprediction.net] Deferring communication with project for 59 seconds
2005-09-20 21:11:40 [climateprediction.net] Giving up on download of 463p_a00294805.zip: file was not found on server
2005-09-20 21:11:40 [climateprediction.net] Checksum or signature error for 463p_a00294805.zip
2005-09-20 21:11:40 [climateprediction.net] Unrecoverable error for result 463p_a00294805_1 (WU download error: couldn\'t get input files:
<file_xfer_error>
<file_name>463p_a00294805.zip</file_name>
<error_code>-163</error_code>
<error_message>file was not found on server</error_message>
</file_xfer_error>
)
2005-09-20 21:11:41 [climateprediction.net] Deferring communication with project for 58 seconds
2005-09-20 21:12:24 [climateprediction.net] Unrecoverable error for result 3e93_000180032_0 (process exited with code 251 (0xfb))
2005-09-20 21:12:24 [climateprediction.net] Deferring communication with project for 59 seconds
2005-09-20 21:13:25 [climateprediction.net] Message from server: No work sent
2005-09-20 21:13:25 [climateprediction.net] Message from server: (reached daily quota of 2 results)
2005-09-20 21:13:25 [climateprediction.net] No work from project
2005-09-20 21:13:25 [climateprediction.net] Deferring communication with project for 3 hours, 49 minutes, and 34 seconds
2005-09-20 21:15:09 [climateprediction.net] Message from server: No work sent
2005-09-20 21:15:09 [climateprediction.net] Message from server: (reached daily quota of 2 results)
2005-09-20 21:15:09 [climateprediction.net] No work from project
2005-09-20 21:15:09 [climateprediction.net] Deferring communication with project for 3 hours, 48 minutes, and 18 seconds
2005-09-20 22:15:09 [climateprediction.net] Deferring communication with project for 2 hours, 48 minutes, and 18 seconds
2005-09-20 23:15:10 [climateprediction.net] Deferring communication with project for 1 hours, 48 minutes, and 18 seconds
2005-09-21 00:15:10 [climateprediction.net] Deferring communication with project for 48 minutes and 17 seconds
2005-09-21 01:05:02 [climateprediction.net] Message from server: No work sent
2005-09-21 01:05:02 [climateprediction.net] Message from server: (reached daily quota of 2 results)
2005-09-21 01:05:02 [climateprediction.net] No work from project
2005-09-21 01:05:02 [climateprediction.net] Deferring communication with project for 1 days, 0 hours, 22 minutes, and 44 seconds
2005-09-21 01:05:34 [climateprediction.net] Unrecoverable error for result 3drz_000179411_0 (process exited with code 251 (0xfb))
2005-09-21 01:05:34 [climateprediction.net] Deferring communication with project for 1 days, 0 hours, 22 minutes, and 12 seconds
2005-09-21 01:06:26 [climateprediction.net] Giving up on download of 47oh_a00296849.zip: file was not found on server
2005-09-21 01:06:26 [climateprediction.net] Checksum or signature error for 47oh_a00296849.zip
2005-09-21 01:06:26 [climateprediction.net] Unrecoverable error for result 47oh_a00296849_1 (WU download error: couldn\'t get input files:
<file_xfer_error>
<file_name>47oh_a00296849.zip</file_name>
<error_code>-163</error_code>
<error_message>file was not found on server</error_message>
</file_xfer_error>
)
2005-09-21 01:06:27 [climateprediction.net] Deferring communication with project for 1 days, 0 hours, 21 minutes, and 20 seconds
2005-09-21 02:06:27 [climateprediction.net] Deferring communication with project for 23 hours, 21 minutes, and 20 seconds
2005-09-21 03:06:28 [climateprediction.net] Deferring communication with project for 22 hours, 21 minutes, and 19 seconds
2005-09-21 04:06:29 [climateprediction.net] Deferring communication with project for 21 hours, 21 minutes, and 18 seconds
2005-09-21 05:06:29 [climateprediction.net] Deferring communication with project for 20 hours, 21 minutes, and 17 seconds
2005-09-21 06:06:30 [climateprediction.net] Deferring communication with project for 19 hours, 21 minutes, and 16 seconds
2005-09-21 07:06:31 [climateprediction.net] Deferring communication with project for 18 hours, 21 minutes, and 16 seconds

15) Message boards : climateprediction.net Science : Global Warming:Before and after images website (Message 11545)
Posted 1 Apr 2005 by Profile old_user849
Post:
Hi all,

Take a look at this:-

http://news.bbc.co.uk/2/shared/spl/hi/picture_gallery/05/sci_nat_how_the_world_is_changing/html/1.stm

And these:-

http://news.bbc.co.uk/1/hi/sci/tech/4395817.stm

http://www.worldviewofglobalwarming.org/index.html

K.
16) Message boards : Number crunching : Is there a problem with uploader1.atm.ox.ac.uk? (Message 9712)
Posted 21 Feb 2005 by Profile old_user849
Post:
Haveing this problem also. BOINC 4.19 tried to upload results multiple times. Will continue as I don't want to lose 500 hrs of work.

K.

PS - Can't find a 'server status' page on this site, as is provided on the SAH site. Any chance?? or did I just overlook it.

K.
17) Message boards : Number crunching : URL change for BOINC World Stats from \"BOINC Synergy\" (formerly SETI Synergy) (Message 9692)
Posted 21 Feb 2005 by Profile old_user849
Post:
Hi Zain,

Thanks for the info. I have to say that I think this a great site for the BOINC stats, and visit regularly.

OK on the name change - way to go I would say. Won't be joining the team tho', as I am already commited.

Knighrider. (Team MacNN)
18) Message boards : Cafe CPDN : sig test (Message 5783)
Posted 30 Oct 2004 by Profile old_user849
Post:
Test 1234
<a href="http://www.boinc.dk/index.php?
page=user_statistics&amp;project=cpdn&amp;userid=849"><img border="0" height="70" src="http://849.cpdn.sig.boinc.dk?66"></a>
19) Message boards : Cafe CPDN : Avatar test thread. (Message 3871)
Posted 11 Sep 2004 by Profile old_user849
Post:
Test
20) Message boards : Cafe CPDN : Hurricane Ivan (Message 3764)
Posted 10 Sep 2004 by Profile old_user849
Post:
Here are a couple of links:

Some good sat images here:

http://www.esl.lsu.edu/htmls/goes.html

A good one for Florida:

http://image4.flhurricane.com/

Post more links if you have them.

K.


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